可出现补体下降的病变有() A.IgA肾病 B.局灶节段性肾小球硬化 C.系膜毛细血 发布时间:2017-08-14 20:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 可出现补体下降的病变有()A.IgA肾病B.局灶节段性肾小球硬化C.系膜毛细血管性肾炎D.重度系膜增生性肾炎E.IgM肾病
题型:单项选择题 完形填空。 Mr Smith has a great sports collection. He has___1___basketball. He has___2___baseballs. He has three soccer balls___3___three___4___.He likes(喜欢)sports very much. He___5__sports everyday.___6___his son likes___7___,too. He___8___a great sports collection, too. He often plays___9___ soccer with___10___friend, Tom.( )1.A.one ( )2.A.a ( )3.A.but ( )4.A.volleyball ( )5.A.play ( )6.A.But ( )7.A.sports ( )8.A.have ( )9.A.an ( )10.A.he B.two B. one B.on B.volleyballs B.are B.And B.club B.has B./ B.her C.three C.three C.and C.volley ball C.playing C.Or C.basketballs C.having C.a C.his D.five D.an D.of D.volley ballsD.plays D.For D.oranges D.is D.the D.she 查看答案
题型:单项选择题 锌粉可将水体中的硝酸盐还原,其反应原理可以用以下离子方程式表示______NO3-+______OH-+______Zn+______H2O→______NH3+______Zn(OH)42-(1)配平上述离子反应方程式,标出电子转移的方向和数目;(2)某河段同时受酸性物质污染,若锌粉与其还原的硝酸根离子的物质的量之比为4:1,则锌粉被氧化为______离子,硝酸根离子被还原为______(均用化学符号表示);(3)将锌粉改为铝粉在上述酸性条件下还原硝酸盐,若还原等物质的量的硝酸根离子,锌与铝的物质的量之比为______;(4)现已合成了有Zn-Zn共价键的化合物,由Zn2O制Zn2Cl2可选用的试剂是______.a.盐酸 b.氯气 c.KClO3. 查看答案